Post on 29-Apr-2018
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LAROX PERISTALTIC PUMPS FOR DOSING
ONE COMPRESSIONIS ALL YOU NEED
A single, bearing-mounted roller pressesthe hose only once per the 360 degreeoperating cycle, producing the maximumflow per revolution. Compared toconventional peristaltic pumps, theLPP-D doubles the flow per hosecompression.
UNIQUE ROLLING DESIGN
LPP-D pumps incorporate advancedrolling design which eliminates frictionand lowers energy consumption. Theroller is mounted on a crankshaft creatingeccentric rotation during the 360 degreeoperating cycle.
OPERATING PRINCIPLE
The operating principle of the LPP-Dpump is based on the peristaltic effect.As the cylindrical rotor rotates alongthe hose, the process medium getspushed forward through the hose. Atthe same time, the hose behind thecompression point reverts to its originalcircular shape creating a suction effectat the pump inlet port. As a result, thehose bore gets filled with the medium.No backward flow can occur as thehose is squeezed tight by the roller.
The innovative Larox Peristaltic Pumps for Dosing (LPP-D)set a new industry standard for peristaltic pump technology.Designed and manufactured for the industrial marketplace,they are ideal for pumping diverse slurries and dosing awide range of media.
The advancedLPP-D design
LPP-DPUMP
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TRAILBLAZING TECHNOLOGY
Equipped with the standard technical features ofa typical peristaltic pump such as dry runcapability and self priming, the LPP-D pumpsprovide exact flow per revolution. Seal lesspumps will not get damaged even if they run dryfor longer periods of time. The LPP-D pumps arecompact in design and require only a smallfootprint.
STANDARD TECHNICAL FEATURES FORPERISTALTIC PUMPS INCLUDE:
• Only the hose is in contact with the medium• No gland water or packing• Full vacuum capability• No backward flow• Positive displacement
PROCESS BENEFITS
• No wear and corrosion• Accurate flow for dosing and metering• Exact flow per revolution irrespective of the pipeline pressure• Dry run capability• Self-priming• No mixing or shearing of the medium
IDEAL FOR DOSING
The trailblazing LPP-D pumps have a highturndown ratio making them ideal dosing andflow control. They provide accurate dosing in allprocess conditions as the pump discharge flowdoes not depend on the pipeline pressure.
Incorporating an advanced design, the LaroxLPP-D pumps can offer unbeatable additionalfeatures including
• 360 degree operating cycle• Only one compression per revolution• Rolling hose contact• In-line pipe connection• Reliable hose connection• Low lubrication need
and process benefits such as
• Higher flow per compression than any other peristaltic pump• Extended hose life• High pressure capability• No overheating at continuous maximum flow rate
LPP-D pumps are manufactured using durable elastomers making themperfect for pumping and dosing a wide range of media. They providesubstantial savings through improved process performance andefficiency, long service intervals and low maintenance costs.
Lockingbracket
Seal
Hose
Threadedcoupling
LPP-D15 A simple and reliable hoseconnection. Locking, sealing andsecuring with a one piece lockingbracket.
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OPTIMAL HOSE FOR EACH MEDIA
With decades of experience in developing innovative flow controlsolutions and elastomer technology, Larox Flowsys has a wide selectionof superior elastomers for diverse media and process conditions. Thecorrect mechanical design and material selection are essential for optimalhose lifetime.
LPP-D20
The LPP-D hose includes three sets of layers:the inner layer, the reinforcement layers andthe outer layer.
• The inner layer which is the only part of the hose in contact with the medium is resistant to abrasive wear or chemicals• The reinforcement layers give the hose
its pressure retaining capability• The protecting outer layer enables the hose to return to shape after compression creating a suction effect Outer layer
Reinforcement layers
Inner layer
LPP-D hose construction
HOSE QUALITY YOU CAN RELY ON
The high-grade, clearly colour coded LPP-Dhoses are available in chemical resistantethylene propylene, oil and fat resistant nitrilerubber and extremely abrasive natural rubber.All these hose materials are ideal for heavy wearingapplications. To guarantee the best possiblemechanical characteristics, the hose cover isalways made of natural rubber.
EPDM• Ethylene propylene• Medium: chemicals• Colour code: violet
NBR• Nitriline rubber• Medium: oil and fat• Colour code: yellow
NR• Natural rubber• Medium: extremely abrasive• Colour code: light blue
All stages of the LPP-D pump and hose designand manufacturing are covered by ISO9001:2000.
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FLOW RANGES
A MULTITUDE OF APPLICATIONS
Larox peristaltic pumps have proven theirsuitability for a wide range of industries andapplications. The LPP-D hose pump is a perfectsolution for industrial pumping, dosing and
diverse slurry duties. Designed for industrialpumping, the LPP-D pump is ideal for slurries withhigh solid content, abrasive, corrosive, viscousand crystallizing media.
PRODUCT SPECIFICATIONS
• Size range: LPP-D15, LPP-D20,LPP-D25
• Flow capacity: up to 2 m3/h• Maximum operating pressure:
7.5 bar• Standard drive unit: parallel shaft
geared motor• Auxiliaries: revolution detector, hose leakage detector, integrated
frequency inverter• The pump can also be equipped with a helical bevel geared motor
Flow with maximum pressure
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TYPICAL APPLICATIONS
INDUSTRY APPLICATION/MEDIA
Mining and Metal Industry Metal concentrates and mineral slurries, flocculants
Chemical Process Industries Paints, acids, resins
Water and Effluent Treatment Slurries, sludge, mud, additives
Pulp & Paper Industry Paper coatings, glues, additives
Pigments and Fillers GCC, PCC, talc, kaolin, TiO2
Energy Production Lime, waste slurries, gypsum
Food and Beverage Industry Filtering and filtration aids, diatomaceous earth, starch
Construction Industry Mortars, plasters, bentonite, cement
Oil and Offshore Drilling mud, waste sludge
LPPPumps
LPP-D 04/08 ENG
MANUAL
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FOR YOUR LOCAL LAROXREPRESENTATIVE SEE
WWW.LAROX.FI/FLOWSYS/
LAROX FLOWSYS OY • P.O. BOX 338 • FI-53101 LAPPEENRANTA, FINLAND • TEL. +358 201 113 311 • FAX +358 201 113 300
E-MAIL INFO@LAROX.FI • WWW.LAROX.FI